Re: [Xen-users] HVMLoader bug - staging

[Anthony PERARD <anthony.perard@xxxxxxxxxx>]

On Tue, Sep 06, 2016 at 02:55:10PM +0200, Paulina Szubarczyk wrote:
> I have just updated the Xen staging branch (from commit '20624fde57^' to
> '50c7203cc101^') and a domain that was working fine just a couple hours ago
> now fails to create with the log from xl dmesg:
> 
> (d1) Loading SeaBIOS ...
> (d1) no BIOS ROM image found
> (d1) *** HVMLoader bug at hvmloader.c:370
> (d1) *** HVMLoader crashed.
> 
> I see there were some changes according SeaBIOS in this period.
> Is it a regression or should I adjust my configuration?
> 
> Following a broader xl dmesg log:
> 
> (XEN) memory.c:213:d0v3 Could not allocate order=18 extent: id=1 memflags=0
> (0 of 1)
> (XEN) memory.c:213:d0v3 Could not allocate order=9 extent: id=1 memflags=0
> (2 of 4)
> (XEN) memory.c:213:d0v3 Could not allocate order=9 extent: id=1 memflags=0
> (0 of 4)
> (XEN) memory.c:213:d0v3 Could not allocate order=9 extent: id=1 memflags=0
> (0 of 4)
> (XEN) memory.c:213:d0v3 Could not allocate order=9 extent: id=1 memflags=0
> (0 of 4)
> (XEN) memory.c:213:d0v3 Could not allocate order=9 extent: id=1 memflags=0
> (0 of 4)
> (XEN) memory.c:213:d0v3 Could not allocate order=9 extent: id=1 memflags=0
> (0 of 4)
> (XEN) HVM1 save: CPU
> (XEN) HVM1 save: PIC
> (XEN) HVM1 save: IOAPIC
> (XEN) HVM1 save: LAPIC
> (XEN) HVM1 save: LAPIC_REGS
> (XEN) HVM1 save: PCI_IRQ
> (XEN) HVM1 save: ISA_IRQ
> (XEN) HVM1 save: PCI_LINK
> (XEN) HVM1 save: PIT
> (XEN) HVM1 save: RTC
> (XEN) HVM1 save: HPET
> (XEN) HVM1 save: PMTIMER
> (XEN) HVM1 save: MTRR
> (XEN) HVM1 save: VIRIDIAN_DOMAIN
> (XEN) HVM1 save: CPU_XSAVE
> (XEN) HVM1 save: VIRIDIAN_VCPU
> (XEN) HVM1 save: VMCE_VCPU
> (XEN) HVM1 save: TSC_ADJUST
> (XEN) HVM1 restore: CPU 0
> (d1) HVM Loader
> (d1) Detected Xen v4.8-unstable
> (d1) Xenbus rings @0xfeffc000, event channel 1
> (d1) System requested SeaBIOS
> (d1) CPU speed is 1696 MHz
> (d1) Relocating guest memory for lowmem MMIO space disabled
> (XEN) irq.c:275: Dom1 PCI link 0 changed 0 -> 5
> (d1) PCI-ISA link 0 routed to IRQ5
> (XEN) irq.c:275: Dom1 PCI link 1 changed 0 -> 10
> (d1) PCI-ISA link 1 routed to IRQ10
> (XEN) irq.c:275: Dom1 PCI link 2 changed 0 -> 11
> (d1) PCI-ISA link 2 routed to IRQ11
> (XEN) irq.c:275: Dom1 PCI link 3 changed 0 -> 5
> (d1) PCI-ISA link 3 routed to IRQ5
> (d1) pci dev 01:2 INTD->IRQ5
> (d1) pci dev 01:3 INTA->IRQ10
> (d1) pci dev 02:0 INTA->IRQ11
> (d1) pci dev 04:0 INTA->IRQ5
> (d1) No RAM in high memory; setting high_mem resource base to 100000000
> (d1) pci dev 03:0 bar 10 size 002000000: 0f0000008
> (d1) pci dev 02:0 bar 14 size 001000000: 0f2000008
> (d1) pci dev 04:0 bar 30 size 000040000: 0f3000000
> (d1) pci dev 03:0 bar 30 size 000010000: 0f3040000
> (d1) pci dev 03:0 bar 14 size 000001000: 0f3050000
> (d1) pci dev 02:0 bar 10 size 000000100: 00000c001
> (d1) pci dev 04:0 bar 10 size 000000100: 00000c101
> (d1) pci dev 04:0 bar 14 size 000000100: 0f3051000
> (d1) pci dev 01:2 bar 20 size 000000020: 00000c201
> (d1) pci dev 01:1 bar 20 size 000000010: 00000c221
> (d1) Multiprocessor initialisation:
> (d1)  - CPU0 ... 39-bit phys ... fixed MTRRs ... var MTRRs [1/8] ... done.
> (d1) Testing HVM environment:
> (d1)  - REP INSB across page boundaries ... passed
> (d1)  - GS base MSRs and SWAPGS ... passed
> (d1) Passed 2 of 2 tests
> (d1) Writing SMBIOS tables ...
> (d1) Loading SeaBIOS ...
> (d1) no BIOS ROM image found
> (d1) *** HVMLoader bug at hvmloader.c:370
> (d1) *** HVMLoader crashed.


Could you send the output of:
xl -vvv create ..

> 
> the domain .cfg file:
> #
> # Kernel
> #`
> builder = 'hvm'
> memory  = '3072'
> vcpus   = '1'
> boot    = "c"
> bootloader = "pygrub"

You have the bootloader option here, but it seams to be a PV guest
config only, according to the man. Does your guest work without it?

In any case, there is probably a bug if someone try to use 'kernel'
config option with an HVM guest.

Thanks,

> #
> # Disk devices
> #
> disk    = ['phy:/dev/vg0/suse,hda,w']
> acpi    = '1'
> apic    = '1'
> pae     = '1'
> serial  = 'pty'
> usb     = '1'
> 
> #
> # Networking
> #
> vif     = ['bridge=xenbr0']
> dhcp    = 'dhcp'
> 
> 
> Thank you,
> Paulina Szubarczyk
> 

-- 
Anthony PERARD

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